Swimming pool frame structure



FIG. 1 is a top plan view of an alternative embodiment of a swimming pool frame structure showing my new design, the portion shown in dotted lines is included for illustrative purposes only and forms no part of the claimed design,

FIG. 2 is a bottom view thereof, the portion shown in dotted lines is included for illustrative purposes only and forms no part of the claimed design,

FIG. 3 is a front view thereof, the portion shown in dotted lines is included for illustrative purposes only and forms no part of the claimed design and the rear view is a mirror image thereof; and,

FIG. 4 is a left side view thereof, the portion shown in dotted lines is included for illustrative purposes only and forms no part of the claimed design and the right side view is a mirror image thereof. 

The ornamental design for a swimming pool frame structure, as shown and described. 